SMV1235-011LF

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Variable capacitance diodes, commonly known as Varicaps or Varactors, are widely used in various applications and have proven to be an essential component in the fields of telecommunications, analog to digital conversion and audio-video systems. The SMV1235-011LF is a type of varicap based on a semiconductor process. It is designed for terrestrial digital television applications and contains two diodes connected in parallel.

The SMV1235-011LF varicap provides superior linearity, temperature stability and low distortion when used in applications such as tuners, receiver front ends, analog to digital converters and frequency modulated transmitters. It also offers fast switching times and a small package size that can be easily integrated into any system.

The varicap is composed of two N-type Junction Field-Effect Transistors (JFETs) with a pass gate (note: a two-terminal device that can increase conduction with a small signal) to couple them. The two FETs are arranged in a differential pair configuration, meaning two FETs that work in oppositely biased states. When the voltage applied to the gate of the differential pair changes, it causes the resistance to vary between the two FETs, thus changing the capacitance of the varicap. This allows for greater linearity and signal control.

The SMV1235-011LF varicap has a capacitance range of 8-14 pF, making it ideal for linear applications. It also has a fast oscillation time of 10.5us at an applied voltage of 10V. The device operates over a wide temperature range of -25°C to +85°C.

The SMV1235-011LF is a versatile, reliable and low-cost device that can be used in a variety of applications. It can be used in the tuning of receivers, modulation of frequency of transmitters, demodulation of receive signals, and in the conversion between analog and digital signals. It is suitable for use in telecommunications, satellite, CATV, and automotive applications as well.

In summary, the SMV1235-011LF is a variable capacitance diode that can be used in a wide variety of applications. It offers superior linearity, temperature stability and low distortion, as well as a fast switching time and small package size. Its wide capacitance range and low cost make it an ideal choice for many applications.

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